By Deb Haines While marijuana use can be a pleasurable experience for many people, it can be dangerous for dogs. Tetrahydrocannabinol (THC), the psychoactive substance in marijuana that produces a high for humans, is toxic to dogs, and can cause vomiting, incoordination, depression, sleepiness or excitation, low blood pressure, low body temperature and seizures. DeathContinue reading “Marijuana”